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Femigon (フェミゴン) is a species of supernatural Kaiju that debuted in the TV series, Return of Ultraman. A female monster who made a surprise appearance after a run of alien invasions, Femigon seemingly requires the possession of living beings in order to manifest her physical form.

Subtitle: Will-o'-the-wisp Monster (人魂怪獣 Hitodama Kaijū)


Return of Ultraman


By the first scene of the series, Femigon had already possessed Yuriko Oka, the communication officer of MAT and unintentionally caused her to lose focus on her job, both of which is nearly fatal to her teammates during their flight in MAT Arrow. As she was sent on a month-long rest, Femigon possessed Yuriko midway in her return to home and attacked an oil complex in Boso Peninsula. Femigon disappeared that night just to return to Yuriko's form once arriving home, but the traces of petroleum that spilled onto Femigon during her rampage through the complex remained.

The next day, Femigon took over again to attack another oil complex in Chiba. Hideki Go transforms into Ultraman Jack to fight the space monster and chased it to the depths of the sea, where Femigon was about to attack MAT's headquarters. Jack ended the battle with Ultra Spark, causing Femigon to disappear and returning Yuriko to the nearby beach. The Targeted Woman


  • Suit actor: Takanobu Toya
    • The Femigon suit had a bump on its back; this is where the suit actor would place his head while the monster's actual head was manipulated by a string.
  • Designer: Akihiko Iguchi
    • Despite its identical appearance to poultry, Femigon's actual design inspiration is a mermaid.
  • By the time Femigon appeared, the world was already clearly having a run of alien invasions, making Femigon's appearance significant as she was not connected to an alien, the first time this happened since Alien Nackle had appeared.
  • There was no proper explanation as to when or how did Femigon even appear in the series, having already possessed the MAT officer Yuriko by the first scene of the series. Multiple books and magazines designates Femigon as a space monster, something that is acknowledged even in Ultraman Mebius. The 2002 Ultraman Pictorial book even stated that Femigon is conglomerate of space monster spirits.
    • Additionally since none of the MAT members witnessed Jack's fight with Femigon underwater, their archived document in Crew GUYS was falsely written to be separated from Yuriko when Jack fired his Spacium Beam. This "claim" is even referenced by Teppei (see below) when discussing attempts to separate Misa from the Femigon Flame variant.
  • The Femigon suit was later modified to create the monster, Orolonger, from Jumborg Ace.

Femigon on Belyudra's body

  • Femigon's roar is a sped up Gabara roar.
  • Femigon is one of the monsters that makes up Belyudra's body in Mega Monster Battle: Ultra Galaxy Legends The Movie.

Ultraman Mebius

Femigon Flame

A different breed of Femigon reappeared in episode 33 of the series Ultraman Mebius. This variation is known as Femigon Flame (フェミゴンフレイム Femigon Fureimu), complete with a different set of abilities.

A space monster who originally appeared as a hitodama, Femigon possessed a medical student named Misa, causing her to develop pyrokinesis upon experiencing panic attack. A week later, Misa's older brother sought Teppei and the Crew GUYS' help in expelling Femigon even a so-called psychic medium failed to do the job. The night of Misa's admission into her ward, Femigon took over to wreck havoc in an oil complex. Femigon disappeared after that but its sole presence, combined with Misa sharing the same right shoulder injury was enough for Teppei to finally piece all of the problems together. Using MAT's document from Yuriko as a victim, Teppei concluded that an Ultraman's beam is enough to separate the two beings, but this Femigon is different from the first one. At such, killing the monster does not guarantee Misa's safety as well.

The young med student was torn with the option to save either the civilians or Misa, so much so that it jeopardized Mebius' near attempt of killing it. After a thorough research, he finally invented the Spirit Separator, using it on Femigon's final reign of terror before combining with Mebius' Mebium Shoot. The operation was successful, but Misa loses her memories from being possessed by Femigon, including her previous affection for Teppei. Lady of the Blue Fire


  • Suit actor: Lou Nishimura
  • Designer: Hiroshi Maruyama
    • Femigon was redesigned in this series with a new coloration on the back thorns, which unfortunately didn't make it to the final cut. However as a distinction to the original Femigon suit, the 2006 version is capable of inserting the suit actor's head into Femigon's long neck. Though Femigon Flame bears a close resemblance to the original, she can be distinguished by her longer spikes, rounder scales and more streamlined face.
  • The psychic medium that first appeared to exorcise Femigon Flame from Misa claimed that she was possessed by the spirit of mujina. It is possible that the individual was a fraud, considering that at the very least, a hitodama (Femigon's "actual" form) is actually the soul of a deceased human.
  • The head of the Femigon suit in Ultraman Mebius was later modified for the head of Black King in Mega Monster Battle: Ultra Galaxy Legends The Movie.


  • Height: 70 m
  • Weight: 50,000 t
  • Neck length: 20 m
  • Origin: Space
Powers and Weapons
  • Flame Radiation: Femigon can breathe a stream of fire from her mouth.
  • Back Spikes: The red spikes on Femigon's back are sharp enough to stab Ultras.
  • Hitodama Form: Although not shown, supplementary magazines mentioned that this is Femigon's actual form.
    • Possession: In order to fully materialize as a monster, Femigon must possess a living being; in this case, MAT communication officer Yuriko Oka. The monster's presence can cause Yuriko to lose her sense of focus and leaves her unharmed after hiding itself from fighting in its monster form, although doing so would leave her exhausted.
  • Underwater Adaptation: Although incapable of swimming, Femigon is at the very least able to walk underwater without any setbacks.

Femigon Flame
Femigon Transparent.png
  • Height: 70 m
  • Weight: 50,000 t
  • Origin: Space
Powers and Weapons
  • Fireball: Femigon Flame can spit fireballs; powerful enough to knock down opponents.
  • Flame Consumption: From the burning oil tanks, Femigon Flame is capable of eating the fires.
  • Eye Darts: Femigon can shoot tiny light red energy darts from her eyes.
  • Hitodama Form: Femigon's true form is a hitodama, which was used for interstellar travel.
    • Possession: In order to fully materialize as a monster, Femigon must possess a living being; in this case, a medical student named Misa. As this Femigon is a different breed, any form of injuries that the monster received can be translated back to the medical student.
      • Pyrokinesis: Due to Femigon's presence in Misa, this granted the young girl uncontrollable pyrokinesis, triggered whenever she received a panic attack.
      • Teleportation: After being possessed by Femigon, the host is able to teleport.



Return of Ultraman

Ultraman Mebius

Return of Ultraman Kaiju
Takkong | Zazahn | Arstron | Sadola | Detton | Kingsaurus III | Gudon | Twin Tail | Gorbagos | Ghostron | Dangar | Stegon | Mognezun | Shugaron | Seamons | Seagorath | Eledortus | Terochilus | Bemstar | Sartan | Magnedon | Beacon | Gokinezula | Zanika | Vacuumon | Kupukupu | Kingstron | Zagoras | Nokogilin | Gronken | Varricane | Yadokarin | Oxter | Plooma | Alien Zelan | King Maimai | Alien Mates | Muruchi | Leogon | Pris-Ma | Draculas | Re-Seagorath | Re-Bemstar | Black King | Alien Nackle | Alien Varduck | Alien Black | Snowgon | Alien Baltan Jr. | Builgamo | Alien Stora | Paragon | Alien Grotes | Kodaigon | Granadas | Alien Centaurus | Robonez | Alien Cygnus-61 | Alien Messie | Alien Zoole | Red Killer | Femigon | Yametaranese | Sasahiller | Alien Ateria | Alien Mysteler | King Bockle | Alien Bat | Zetton II
Ultraman Mebius Kaiju
Ultraman Mebius Dinozaur | Gudon | Birdon | Miclas | Kelbim | Dinozaur II | Sadola | Twin Tail | Bogarl | Lim Eleking | Alien Fanton | C-Pin 929 | Bogarlmons | Dinozaur III | Windom | Dinozaur Reverse | Kodaigon | Mukadender | Insectus | Gromite | Zamsher | Alien Magma | Alien Valky | Saramandora | Bemstar | Daigarugu | Arstron | Kelbim II | Lesser Bogarl | Chronorm | Alien Angel | Yapool | Fire Windom | Vakishim | Doragory | Verokron | Maquette Zetton | Ultraman Mebius (Maquette) | Nova | Maquette Nova | Inpelaizer | Roberuga | Alien Mates | Zoa Muruchi | Femigon | Alien Reflect | Alien Babarue | Angross | Alien Psychokino | Jasyuline | Arigera | Alien Serpent | Sorichra | Sorichran | Roberuga II | Hoe | Gomora IV | Mysterious Saucer fleet | Gadiba | Red King | Gomora Alpha | Mebius Killer | Giant Yapool | Alien Deathre Deathrem | Lunaticks | Alien Groza Grozam | Alien Mefilas III | Gromite II | Mass-Produced Inpelaizer | Alien Empera
Ultraman Mebius Gaiden: Hikari Saga Arb | Bogarl | Bemstar | Alien Babarue
Ultraman Mebius & the Ultra Brothers U-Killersaurus | Yapool | Alien Temperor | Alien Zarab | Alien Guts | Alien Nackle | U-Killersaurus Neo
Ultraman Mebius Gaiden: Armored Darkness Saramandora | Mukadender | Roberuga | Kelbim | Armored Darkness
Great Decisive Battle! The Super 8 Ultra Brothers King Guesra | King Pandon | King Silvergon | King Goldras | Alien Super Hipporit | Giga Khimaira | Black Silhouette
Ultraman Mebius Gaiden: Ghost Rebirth Mechazam | Inpelaizer | Alien Mefilas III | Alien Groza Grozam | Alien Deathre Deathrem | Mebius Killer | EX Zetton | Ghost Rebirth
Ultraman Mebius: Anderes Horizont Alien Mates Bio | Matsue | Alien Serpent | Naga | Alien Shaplay | Albino Giradorus | Usual | Shaplay Beast